text 215 1420 831 1877
text 873 1404 1491 1879
text 873 1072 1491 1258
text 215 181 831 1287
text 873 176 1491 412
equation 373 1311 829 1396
equation 980 433 1487 501
equation 1015 1282 1487 1364
text 872 522 1490 819
equation 954 1012 1487 1048
text 873 895 1489 991
equation 889 839 1472 878
header 530 124 1176 148